<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
	<script type="text/javascript">


			// document.write(history.length);
			// 
		function run () {
			// alert(history.length)
			history.go(-2);
		}

		setTimeout(run,2000)

	</script>
</head>
<body>
	
</body>
</html>